David Livingstone,
A Popular Account of Dr Livingstone's Expedition to the Zambesi and its Tributaries…
(1894)
“ The hippopotamus, having selected some still reach of the river to spend the day, rises out of the bottom, where he has been enjoying his morning bath after the labours of the night on shore, blows a puff of spray from his nostrils, shakes the water out of his ears, puts his enormous snout up straight and yawns, sounding a loud alarm to the rest of the herd, with notes as of a monster bassoon. ”
